Reputable

As stated in the title, for months this ongoing problem has been really bugging me, if my ethernet is plugged into my motherboard, the computer won't boot, it won't even get to the bios splash.
All it shows is the image below.

I've read online about disabling PXE boot and Fast Boot, which I have tried but to no avail.
The only way this is solved is by disabling my ethernet adapter from the bios, but by doing that, I dont have any internet via ethernet when windows is loaded.

I have a TPLink PCI-E wifi adapter and I'm using a 20m cat6a cable.
But i didn't think those would make a difference. If anyone has any other viable solutions, please let me know.

Upstanding

Have you tried pulling the gpu and using onboard graphics with the wifi adapter in. I'm thinking maybe you have a pcie lane problem. And what happens if you start your system and then add in the wifi card?